Surface paper strength enhancer, coating liquid, and paper manufacturing method

By adjusting the composition and viscosity of the surface paper strength enhancer and utilizing pseudo-polyionic composite technology, the problem of insufficient paper strength enhancement in existing technologies has been solved, achieving a better paper strength enhancement effect.

CN122161970APending Publication Date: 2026-06-05ARAKAWA CHEM IND LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ARAKAWA CHEM IND LTD
Filing Date
2024-11-22
Publication Date
2026-06-05

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Abstract

The present invention relates to a surface paper strength enhancer, a coating liquid containing the surface paper strength enhancer, and a paper manufacturing method including a step of applying the coating liquid to a surface of a base paper and drying, the surface paper strength enhancer containing a polymer (A) containing (meth)acrylamide (a1), (meth)acrylamide having a carboxyl group (a2), an ethylenically unsaturated monomer having a sulfo group (a3), and a cross-linkable monomer (a4) in a reaction component, and a solution of the surface paper strength enhancer having a non-volatile component concentration of 20% by weight has a viscosity of 100 mPa-s to 5,000 mPa-s at a temperature of 25°C.
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